I may have found a wallet/miner bug.
More like malfunction. Will do more testing if anybody is interested.
I have 4 PCs mining to a wallet on one of them.
3 with nvidia cards and one with some AMD 7850s.
If I start the AMD one first ALWAYS the third nVidia doesn't connect,
After 30s or so the error message is:
[2015-01-05 13:54:52] 1 miner threads started, using 'spreadx11' algorithm.
[2015-01-05 13:55:22] HTTP request failed: Operation timed out after 30014 milli
seconds with 0 out of -1 bytes received
[2015-01-05 13:55:22] json_rpc_call failed, retry after 5 seconds
If I start the AMD miner after the nVidia ones though, everything is OK.
My wallet is v. 9.15.2 g4.......-beta